HydroBASINS lev08 watershed · #2080415930
Bassin de Lahn
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 5 administrative regions : Gießen, Lahn-Dill-Kreis, Marburg-Biedenkopf, Vogelsbergkreis, Wetteraukreis
Sub-basin area
1 001,1km²
Upstream area
2 633,4km²
Discharge
23,59m³/s
Mean elev.
264m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ohm982 km²
- Bassin de Lahn650 km²
5 dept-equivalent regions (GADM L2)
- 488.5 km²48.6% of basin
- 385.4 km²38.4% of basin
- 96.2 km²9.6% of basin
- 24.0 km²2.4% of basin
- 10.6 km²1.1% of basin
30 intersecting protected areas
Auenverbund Lahn-Dill
IUCN VLandscape Protection Area
27.22 km² overlap
Lahnhänge zwischen Biedenkopf und Marburg
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.59 km² overlap
Auenverbund Lahn-Ohm
IUCN VLandscape Protection Area
9.53 km² overlap
Landscape Protection Area
8.16 km² overlap
Krofdorfer Forst
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.11 km² overlap
Lahntal zwischen Marburg und Gießen
IUCN Not ReportedSpecial Protection Area (Birds Directive)
7.43 km² overlap
Landscape Protection Area
7.43 km² overlap
Waldgebiete zwischen Weitershain und Bersrod
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.74 km² overlap
Lahnaue zwischen Atzbach und Gießen
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.60 km² overlap
21 more protected areassorted by overlap area
Wieseckaue und Josolleraue
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.51 km² overlap
Grünland und Wälder zwischen Frankenbach und Heuchelheim
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.00 km² overlap
Lahnaue zwischen Atzbach und Gießen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.69 km² overlap
Wald zwischen Roßberg und Höingen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.12 km² overlap
Wieseckaue östlich Gießen
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.96 km² overlap
Nature Reserve
2.15 km² overlap
Hohe Warte bei Gießen
IUCN IVNature Reserve
1.68 km² overlap
Feuchtwiesen bei Daubringen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.65 km² overlap
Wehrholz
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.58 km² overlap
Kleine Lummersbach bei Cyriaxweimar
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.38 km² overlap
Nature Reserve
1.38 km² overlap
Totenberg
IUCN VLandscape Protection Area
1.37 km² overlap
Tränkbachniederung bei Daubringen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.20 km² overlap
Schelder Wald
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.16 km² overlap
Hangelstein
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.06 km² overlap
Hangelstein
IUCN IVNature Reserve
1.06 km² overlap
Feldflur bei Hüttenberg und Schöffengrund
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.04 km² overlap
Steinbrüche in Mittelhessen
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.94 km² overlap
Gießener Bergwerkswald
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.86 km² overlap
Oberes Verstal
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.86 km² overlap
Oberes Verstal
IUCN IVNature Reserve
0.85 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 720 distinct species · 323 385 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Lahn : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 85 interactions GloBI sur 6 types (connectance 15.2%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
8,7°C
Annual rain
758mm
Moisture idx (CMI)
0,02
Runoff
262mm/an
PET
738mm
AET
562mm
Mean slope
4,3°
Water table
313cm
Forest
22%
Crops
27%
Urban
23%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)